NPTEL » Programming in Java

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Week 01 : Programming Assignment 1

Due on 2024-08-08, 23:59 IST

Write a Java program to print the area and perimeter of a rectangle.

Select the Language for this assignment.

File name for this program :

import java.util.Scanner;
public class W01_P1 { 
   public static void main(String[] strings) {
       double width ;
       double height;
 
       Scanner in = new Scanner(System.in);
       width = in.nextDouble();
       height = in.nextDouble();

// Calculate the perimeter of the rectangle
double perimeter = 2 * ( width + height );
 
// Calculate the area of the rectangle
double area = width * height ;

// Print the calculated perimeter using placeholders for values
       System.out.printf("Perimeter is 2*(%.1f + %.1f) = %.2f\n", height, width, perimeter);
 
// Print the calculated area using placeholders for values
       System.out.printf("Area is %.1f * %.1f = %.2f", width, height, area);    
   }
}

Compilation : Passed
Public Test Cases: 1 / 1 Passed

Note: These tests may not be considered while scoring. Know more.

Public Test Cases	Input	Expected Output	Actual Output	Status
Test Case 1	5.6 8.5	Perimeter is 2(8.5 + 5.6) = 28.20\n Area is 5.6 8.5 = 47.60	Perimeter is 2(8.5 + 5.6) = 28.20\n Area is 5.6 8.5 = 47.60	Passed

Private Test cases used for Evaluation	Status
Test Case 1	Passed

Week 01 : Programming Assignment 2

Due on 2024-08-08, 23:59 IST

Write a Java program and compute the sum of an integer's digits.

Your last recorded submission was on 2024-07-22, 08:13 IST

Select the Language for this assignment.

File name for this program :

import java.util.Scanner;
public class W01_P2 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
 
        // Prompt the user to input an integer
        //System.out.print("Input an integer: ");
 
        // Read the integer from the user
        long n = input.nextLong();
 
        // Calculate and display the sum of the digits
        System.out.print("The sum of the digits is: " + sumDigits(n));
    }

// Calculate the sum of the digits by defining a sumDigits() function
// This should return the sum
public static int sumDigits(long n){
  int sum = 0;
  while( n!=0 )
  {
    sum += n%10;
    n/=10;
  }
  return sum;
}

Compilation : Passed
Public Test Cases: 1 / 1 Passed

Note: These tests may not be considered while scoring. Know more.

Public Test Cases	Input	Expected Output	Actual Output	Status
Test Case 1	00020	The sum of the digits is: 2	The sum of the digits is: 2	Passed

Private Test cases used for Evaluation	Status
Test Case 1	Passed

Week 01 : Programming Assignment 3

Due on 2024-08-08, 23:59 IST

Write a Java program to display n terms of natural numbers and their sum.

(Remember to match the output given exactly, including the spaces and new lines)

(passed with presentation error means you will get full marks)

Compilation : Passed
Public Test Cases: 1 / 1 Passed

Note: These tests may not be considered while scoring. Know more.

Public Test Cases	Input	Expected Output	Actual Output	Status
Test Case 1	5	The first 5 natural numbers are : \n 1\n 2\n 3\n 4\n 5\n The Sum of Natural Number upto 5 terms : 15	The first 5 natural numbers are : \n 1\n 2\n 3\n 4\n 5\n The Sum of Natural Number upto 5 terms : 15	Passed

Public Test Cases

Input

Expected Output

Actual Output

Status

Test Case 1

The first 5 natural numbers are : \n
1\n
2\n
3\n
4\n
5\n
The Sum of Natural Number upto 5 terms : 15

The first 5 natural numbers are : \n
1\n
2\n
3\n
4\n
5\n
The Sum of Natural Number upto 5 terms : 15

Passed

Private Test cases used for Evaluation	Status
Test Case 1	Passed

Week 01 : Programming Assignment 4

Due on 2024-08-08, 23:59 IST

Write a Java program to make such a pattern like a right angle triangle with the number increased by 1.

(Remember to match the output given exactly, including the spaces and new lines)

(Ignore presentation errors for this and all future programming assignments)
(passed with presentation error means you will get full marks)

for n=3:

2 3

4 5 6

Compilation : Passed
Public Test Cases: 1 / 1 Passed

Note: These tests may not be considered while scoring. Know more.

Public Test Cases	Input	Expected Output	Actual Output	Status
Test Case 1	4	1 \n 2 3 \n 4 5 6 \n 7 8 9 10	1 \n 2 3 \n 4 5 6 \n 7 8 9 10 \n	Passed after ignoring Presentation Error

Private Test cases used for Evaluation	Status
Test Case 1	Passed

Week 01 : Programming Assignment 5

Due on 2024-08-08, 23:59 IST

Write a Java program to convert an integer number to a binary number.

Select the Language for this assignment.

File name for this program :

import java.util.Scanner;
 
public class W01_P5 {
    public static void main(String args[]) {
        // Declare variables to store decimal number, quotient, and an array for binary
        // digits
        int dec_num, quot, i = 1, j;
        int bin_num[] = new int[100];
 
        // Create a Scanner object to read input from the user
        Scanner scan = new Scanner(System.in);
 
        // Prompt the user to input a decimal number
        // System.out.print("Input a Decimal Number: ");
        dec_num = scan.nextInt();
 
        // Initialize the quotient with the decimal number
        quot = dec_num;

// Convert the decimal number to binary and store binary digits
for( ; quot!=0; i++){
  bin_num[i] = quot%2;
  quot/=2;
}

// Display the binary representation of the decimal number
        System.out.print("Binary number is: ");
        for (j = i - 1; j > 0; j--) {
            System.out.print(bin_num[j]);
        }
        //System.out.print("\n");
    }
}